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Further Studies On Prosthogonimus Macrorchis, Oviduct Fluke Of Poultry, With Special Reference To The Effect On Egg Production In The Ring-Necked Pheasant, Ralph W. Macy

Journal of the Minnesota Academy of Science

No abstract provided.

Longevity Of Red Pine Seed, Eugene I. Roe

Journal of the Minnesota Academy of Science

No abstract provided.

Kentucky Warbler (Vol. 16, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

The Morphology And Histology Of The Virginia Oyster, Ostrea Virginica, Lister, Lewis Charles Goldstein

Master's Theses

The oyster has been known and used commercially since before the Roman and Greek civilizations, and reports of investigations pertaining to it can be found dating back almost to that period. Because of the commercial value of the oyster, most of the study of' the animal has dealt with its economic importance. Definite information concern­ ing the morphology and microscopic . structure of this Mollusc, therefore, is scarce. To be sure, there is an abundance of miscellaneous literature, but no systematic microscopic study has been reported. T. C . Nelson (1938) states, "A critical survey of the abundant and scattered …

Noteworthy Plants From The Duluth Area, Olga Lakela

Journal of the Minnesota Academy of Science

No abstract provided.

A Study Of Subspecific Variation In The Yellow Pocket-Gopher (Geomys Lutescens) In Nebraska, And Of The Geographical And Ecological Distribution Of The Variants, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

The Yellow Pocket-Gopher (Geomys lutescens) was described by Merriam (14) in 1890, as a paler and smaller subspecies of Geomys bursarius, based on "numerous specimens received from the Sand Hills of western Nebraska", and especially upon an adult Cjl type specimen (No. 23595, U. S. N. M.) collected in the sandhills along Birdwood Creek, Lincoln County, Nebraska, May 27, 1889, by A. B. Baker. Although even as late as 1931 Scheffer (17) classified Geomys lutescens as a subspecies of G. bursarius, it is without doubt specifically distinct from G. bursarius. In all of its variations …

Description Of The Rock City At Palo Pinto, Texas, With An Estimate On The Rate Of Rock Creep, Charles L. Mcnulty, Melville M. Mercer

Field and Laboratory

Approximately three miles west of Palo Pinto, Texas, on U. S. Highway 80, is a typical rock city known as Lovers' Retreat. The locality, one of several rock cities in Palo Pinto County, is roughly rectangular in shape and extends for a thousand feet or more along the north side of the highway. Lovers' Retreat is well known in Texas and people come from all parts of the state to picnic in the groves along Eagle Creek and to explore the narrow passsageways between the huge blocks of limestone on the north side of the stream.

Nebraska Bird Review (January-June 1940) 8(1), Whole Issue

Nebraska Bird Review

Contents

The Relation of the Farm Shelterbelt to Wildlife. By Carroll F. Orendurff ................................................................ 1

General Notes ............................................................ 4

Distribution and Migration of the Chat in Nebraska and other Missouri Valley States. By Myron H. Swenk .................... 33

Changes In True-Prairie Vegetation During Drought As Determined By List Quadrats, J. E. Weaver, Joseph H. Robertson, Robert L. Fowler

Papers of John E. Weaver (1884–1956)

The drought of 1934 was not only the most severe on record for the true-prairie association but was also of the earliest inception.  On June 8, Kincer ('34) stated that "pastures are the poorest ever known, and the hay crop will be extremely short, regardless of future weather."  The stress increased as the summer advanced.  Stoddart ('35) tood advantage of these conditions to investigate the relation of osmotic pressure and water content of prairie plants to environmental factors in the vicinity of Lincoln, Nebraska. Simultaneously, Nedrow ('37) was conducting trenching experiments in his study of the efficiency of absorption at …

A Preliminary List Of The Odonata Of Dallas County Texas, Alice Ferguson

Field and Laboratory

Although advances have been made in past years in the study of many groups of Texas animals, little has been published on the Odonata.

Shrubs For Wildlife On Farms In The Southeast, Verne E. Davison

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

On many farms in the Southeast patches of briars and small scrubby growth have been allowed to grow up in pastures, fields, and meadows, where they interfere with good farming. Shrubs have therefore come to be thought of all too often as plants that should be destroyed. The areas they occupy are shrubbed out and burned in an attempt to combat insects and to present an appearance of clean farming. This treatment destroys ground cover and hastens erosion. It deprives wildlife of food and shelter. It reduces the number of beneficial insects but does not exterminate the noxious kinds.

Shrubbing …

Kymographic Recordings Of Muscle And Nerve Tissue From The Rana Pipiens, Guilbert K. Jones

Bachelors’ Theses

This Thesis is the result of several months of work done in the Physiology Laboratory in the Marquette University School of Medicine. The experiments performed will enable one to become familiar with the general principles involved in the recording of reactions of muscle and nerve tissue by Kymographic methods. Especial attention is directed to the results of these experiments.

Entomological Progress: Number 2, C O. Eddy

LSU Agricultural Experiment Station Reports

No abstract provided.

The Genetics Congress, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Mice and men reported from

Edinburgh after the Congress

(JOURNAL OF HEREDITY for

September 1939) but since then there

has been silence, as far as getting into the

record any details of the Congress. On

account of the disruption to trans-Atlantic

travel caused by the declaration of

war between England and Germany,

September 3, the American delegation to

the Congress was considerably delayed

in getting back. Only two failed ultimately

to return, Dr. and Mrs. F. W.

Tinney of the Division of Farm Crops

of the University of Wisconsin. They

were among about a dozen members of

the Congress who …

Digenetic Trematodes Of Fishes From The Galápagos Islands And The Neighboring Pacific, Harold W. Manter

Harold W. Manter Laboratory of Parasitology: Faculty Publications

During January, February, and March of 1934 it was the· privilege of the writer, aided by the Carnegie Institution of Washington, to accompany the third Allan Hancock Expedition to the Galápagos Islands. A preliminary note concerning the trematode parasites collected has been published. Several papers dealing with various helminths collected have appeared. The present paper deals with the digenetic trematodes collected from fishes. Five hundred and thirty-two fishes, including nearly one hundred different species, were examined. Approximately 80 per cent of the species and 43 per cent of the individuals harbored some kind of trematode. Meserve records 22 species of …

A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller

Electronic Theses and Dissertations

No abstract provided.

A Comparison Of Various Sizes Of Inverted Vials Used In Durham Fermentation Tubes., Blanche Mae Welsh

Electronic Theses and Dissertations

No abstract provided.

The Influence Of Nutrition On Sporangial Formation In Araiospora Streptandra., Richard Curtis Webster

Electronic Theses and Dissertations

No abstract provided.

A Study Of Local Size Variations In The Prairie Pocket-Gopher (Geomys Bursarius), With Description Of A New Subspecies From Nebraska, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

Beginning in the fall of 1913, the writer has continuously been interested in accumulating accurate body measurements, taken in the flesh, of Nebraska pocket-gophers. As a result quite an assemblage of such data has been secured. In the case of Geomys bursarius, the bulk of these data relates to specimens trapped in the vicinity of Lincoln, Lancaster County, involving to date 48 adult and 38 immature males and 50 adult and 65 immature females. Recently these measurements have been tabulated and compared with such measurements of the species as have been recorded in the literature from other parts of …

Description Of Two New Birds From Western Texas, Thomas D. Burleigh, George H. Lowery Jr.

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

A New Kangaroo Rat Of The Dipodomys Ordii Group From The Big Bend Region Of Texas, Monroe D. Bryant

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

Geographic Races Of The Kangaroo Rat, Dipodomys Microps, E. Raymond Hall, Frederick H. Dale

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

Notes On The Life History And Ecology Of Gambusia Patruelis, Robert B. Troxel

Biology ETDs

It is the purpose of this thesis to present information on the life of Gambusia patruelis. The study is the combination of data collected by a number of writers on this subject, as well as observations taken of this species from the Rio Grande and conservancy ditches surrounding Albuquerque.

A Study Of The Variations In The Growth Of Blue Grama Grass From Seed Produced In Various Sections Of The Great Plains Region, Andrew Riegel

Master's Theses or Doctor of Nursing Practice

During the past 7 years the Great Plains Region, with its "dust bowl", has been the scene of unparalleled activity in the fields of range management and erosion control. The people of this short grass area are extremely conscious of the need for a sound, practical program of conservation that will revegetate the wasted pasture and cultivated land, which will aid materially in preserving the eroding soil. Many problems have arisen as the program of conserving the soil and the vegetation has progressed.

Origin And Development Of Tissues In The Root Of Daucus Carota, L., M. Gerald Vodde

Bachelors’ Theses

When botanists of the seventeenth century began their anatomical investigations of plants, their attention was quite naturally centered on the parts of the plant which they most readily observed growing above the ground. The Englishman, Robert Hooke (1661), revolutionized the botanical sciences when he announced his discovery of the fact that plant tissues are composed of cavities which he called cells. Many workers enthusiastically took up the study of plant tissues and the individual cells of which these tissues are composed. Progress was rather slow, and it was not until approximately two hundred years later that the cell theory was …

The Pro-Embryo And The Embryo Of Chara, Mary William Saller

Bachelors’ Theses

From earliest times the Charales have drawn the attention of Botanists. Their structure and affinities have led to the most interesting and comprehensive research projects. However, the earliest results, in the light of present day research, differ particularly in one important respect; namely, the origin of the embryo.

A History Of The Changes In Population Of Certain Mammals In Western Kansas, Floyd L. Carter

Master's Theses or Doctor of Nursing Practice

This particular study has been restricted to certain mammals in western Kansas, including some on which there is little information, and others which observers would be most likely to notice in everyday life. For several years the writer has been vitally interested in the animal life in Kansas. Therefore, when the need for a study of western Kansas mammals was presented to him in the summer of 1936, the problem of this study was selected. It is hoped that this report will suggest to ecologists, historians, and others, further studies, including reasons for the changes here-in shown. What have been …

Nebraska Bird Review (July-December 1939) 7(2), Whole Issue

Nebraska Bird Review

Contents

Bird Banding Operations in Nebraska. By Harry E. Weakly .. 25

General Notes ........................................... 27

N. O. U. Cooperative Bird Migration List for Spring of 1939 ... 37

Minutes of the Fortieth Annual Meeting .................... 43

Report on the Thirty-seventh Annual Field Day. . . . . . . . . . . .. 47

A New Bird Guide Book. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 48

The Skull Of Squalus Acanthias, Allan J. Blake

Bachelors’ Theses

The spiny dogfishes (Squalus) inhabit the North and South temperate zones; they have no anal fins; the points of the small teeth are deflected laterally so ·chat the inner margin forms a cutting edge. Squalus Acanthius is very abundant in British waters and off the Atlantic coast of North America. This group has five gill openings and two dorsal fins each of which is typically preceded by a spine. It reaches a length of four feet, and is a great nuisance to fisherman, eating fish and getting caught in lines or in nets. They are all viviparous. Many …

Notes On The Origin And Development Of Zea Mays, Martin William Fleck

Biology ETDs

A combination of many and varied circumstances gives an unusual interest to the origin and natural relationships of Zea mays, although investigation of this sort does not always have an immediate utilitarian objective. But, this type of investigation must of necessity project itself into the remote, and sometimes obscure, past where attention becomes focused on many moot questions. Such intriguing problems as the relative antiquity of agriculture in the Old World, the length of time requisite for the development of maize as a human food stuff, and new ideas concerning techniques of aboriginal agriculture may perhaps be solved by information …